iOS 27 Extensions let you install Claude, Gemini, or ChatGPT and have it power Siri, Writing Tools, and Image Playground — all from one Settings toggle.
iOS 27 Extensions are about to change how every iPhone on the planet handles AI. For the first time in iPhone history, Apple is handing the AI decision to you. A new framework called Extensions, arriving with iOS 27 this fall, lets you install a third-party AI model and have it power the AI functions on your phone. Claude. Gemini. ChatGPT. You choose.
Apple currently has more than one billion active iPhone users. Every single one of them gets whatever AI Apple decides to give them, with zero say in the matter. That changes this fall.
What iOS 27 Extensions Actually Does
The setup is simple. AI providers like Anthropic and Google add support for the Extensions framework to their existing iOS apps. Once you install the Claude or Gemini app, it shows up as a selectable option in your Settings. Flip that toggle, and every Apple Intelligence task on your phone routes to that model.
Apple's own description, found in test versions of iOS 27, states that Extensions let users "access generative AI capabilities from installed apps on demand, through Apple Intelligence features such as Siri, Writing Tools, Image Playground and more."
This is not a minor settings update. It puts Claude, Gemini, and ChatGPT on equal footing in your device preferences, with the same type of user control you already have for default browsers and email apps.
Siri, Writing Tools, and Image Playground Are All Up to You Now
iOS 27 Extensions will allow users to select from multiple third-party AI models for tasks like generating and editing text and images. The change covers iOS 27, iPadOS 27, and macOS 27, and is expected this fall.
That means your Siri responses, your Writing Tools rewrites, and your Image Playground generations could all run on whichever AI you trust the most.
There is also a voice distinction that Apple has built in. Users will be able to assign different Siri voices to different AI providers, separating Apple's own responses from those handled by Claude or Gemini, so you always know which entity actually answered.
Apple's AI War Just Hit the Home Screen
Apple has reportedly been testing integrations with both Google and Anthropic for at least a year. The formal announcement is expected at WWDC on June 8, 2026, with the consumer release following alongside iOS 27 in fall 2026.
It is worth knowing that Google Gemini holds a separate, more native position within Apple Intelligence. Gemini already holds a privileged native position inside Apple Intelligence, backed by a multi-year partnership and a reported one billion dollar annual payment, with Gemini powering the core personalized Siri experience. Extensions sits on top of that arrangement and lets users opt for something different.
ChatGPT's de facto exclusivity — which has been in place since iOS 18.2 in December 2024 — ends with Extensions, and the iPhone becomes a neutral host for whichever AI a user prefers.
What to Expect When iOS 27 Drops This Fall
Install the AI app of your choice, flip a switch in Settings, and from that point on Siri, Writing Tools, and Image Playground route eligible requests to your chosen model. Apple is expected to formally announce iOS 27 Extensions at WWDC on June 8, 2026, with Gemini, Claude, and ChatGPT all confirmed in the picture.
Some details are still open. It is unclear whether premium tiers like Claude Pro would be needed for full functionality, how Apple will handle privacy disclosures for third-party models, and which additional AI surfaces might be added later. Those answers will come at WWDC.
What is already clear: Apple is no longer the one deciding which AI runs your iPhone. That is now your call.
